A) We're not here to give you ideas
B) We're not here to worldbuild in a vacuum
C) We're not here to give you ideas and worldbuild for a setting that already has a TON of worldbuilding and ideas.
You know what the best thing about old /tg/ settings? Was that they were kind of original-ish. (CATastrophe, BroQuest) Or they took a minor trait from an existing setting and amplified it, completely ignoring canon (Angry Marine, FapTau). And the stuff that got contributed was creative and fun because it could be worked into the free-form framework that existed.
But the OPs prompt is shit. If you've read Lord of the Rings and There and Back Again, you have a ton of setting information. You know the peoples, the places, the theme, the mood. Get your lazy off and do something creative instead of trying to get us to do your homework for you.